Albebt bltjmlein



A. BLUMLEN DAMPER MECHANISM l Filed July 8, 1924 Patented Jan. l2, 1926.

UNI T E D ATES` l? AT ENT F F l C E ALBERT BLUMLEIN,. OF NEWV YORK,` NJ Y., ASSGNOR TO PARKER VENTILATION i COlVlIEANY,` INC., A. CORPORATION OF NEW YORK.

Y nnivirnnf ivrnenAN'Isivr.`

Applicationeleafmuys, 1924. semanita. 724;761;

To all 'whom t may concern.' jectingA fromeither side edgeof' the damper, Be it knownthat I,.ALBERTBLUMLEIN, a and Jo'urnaled inthe sidewalls of thereon.-

citizen of theUnit'ed States, residing at New duit, to provide a pivotal. support` for the York, inthe-county andState of New York, damper. l. i

have madeoertain new andusefullmprove.- One endof the shaft-or one `of the pintles 55 ments in Damper-Mechanism, of which the ortrunnions 3 projects through the wall of following isa specification. the conduit (Fig. 3)., and the positioning i The invention-relates to a noveldamper and holding means for the damper isi atmechanismfand more particularly in certain tached thereto. ln the embodied forntf of l0 aspects thereof toI devices for variablyposisuoli means, theend of shaft Sviissquaredor 60 tioning7 the damper. and: holdingnit in post otherwise'shaped to receive afhandle, which tiem V f handle has a `correspondingly. shapedy apere Objects and? advantages of the invention ture 5` near one end thereof,V which passes willlbe set` forth ingpart hereinafter; and in on to the shaft in definite orspecid'posh piu-t. Will bei Obvious herefrom, or may be tion, so that the damperwillbe both rotated 65 learned by practice with the invention, the and held in a dei'niterelationvtothehandle. saine being realized and attainedyby means To insure the handle tfbeingtattaohed in of. the instrumentalities andl combinations .definite desired position with reference to pointed out in the appendedclaims. the damper, and as einloodiedgai projection v The` invention. eonsstgn the novell parts, 6 is formed on the shaft 3 andaafcorrespond- 70 constructions, arrangements, `combinations inglecess 7 isforfrned in` thefopening 5 in and` improvements herein, show-n and dethe handle 4. Thus the. handlezwill goon scribed. the shaft only in parallel position with TheJA 3.0001111@anying` drawings, referred t() damper 1, andtlle handle Onftlle leXtelflOIiS a herein andeonstituting apart hereof-,.illus- VJSual IICl'CQOl Of the Position 0f tlm 75 trate one embodiment of theinvention, and dmpe' Wlthlll theCOnduit.

together withthedescription,` serve to ex- Means are provided in cooperation with plain the principles ofl the invention. the foregoing whereby thel handlemay be Of the drawings readilyI attachedand detached,but in mean- 3o Fig, l is. a sideelevationv of a damper time held securely in its proper position. so

mechanism embodyingVA the invention, in- Accordingly: a plate 10 is provided,1vvhich stalled ina conduit; Y y s also has other functionsV hereinafter de- Fig, 2. is a` greatly enlargedielevatonof scribed, thisplate beingfasteneditothe side the damper positioning` mechanism shown of thefconduit 2 by suitable means, such as near the Center of Fig. 1.; y screws passing through screwl holes l1 in 85 Fig. 3 is a section taken on line 3-3 of the plate. l

Fgng;j p I rlhis plate. has in itsupper end anopen- Fig. 4 is a detached fragmentary view ing l2 through which the shaft Sprojects.

corresponding to the top part of Fig.- 2; and Plate 10 is made of sheet metal'andis dished Fig. 5 is a section taliemon line 5&5 of orV struck up outwardly about the opening 90 l `ig.2.y 12toaprovidea space therebeneath and Referring in detail to the accompanying against the side lof the conduit, .to receive the drawings, illustratingbyl way of; example cooperating.attachable and detachable fasone embodiment ofthe invention, itis shown -tening'means on the handle 4.'

exemplarily appliedv to al damper 1,.of` ree- In the edge.oftheopening-lQ are formed 95 tangular form, mounted and fitting. in` a two diametrically opposite angled recesses conduit 2. of corresponding; cross section, 13 andI 11i withfwhich corresponding projeesnohas is incominon use inventilating systions on the handle cooperate.`

tems. The damper is mounted ona shaft 3 The handle dis also' preferably made from orruponqnivalent pintles Vor Vtrunni'onsprosheet metal,.in accordance withce-rtainfeaL 100 Fig 2).

tures of the invention, and for certain purposes hereinafter described. Cooperating with the devices on plate 10 just described, there is fixed to the upper end of the handle an undercut disc 20, with its smaller diameter toward the handle, the disc being fastened thereto by rivets 21. Disc 2() has two diametrically-opposite, outwardly-extending projections 22 and 23, adapted to pass through the recesses 13 and 14 in the sides of the opening 12 and then to lock under the edge of aperture 12, while leaving the handle free to rotate.

The positioning and holding means, as embodied, further comprises cooperating devices on the plate 10 and handle 4. rIhe resilient property of the sheet metal handle is preferably employed to effect the positioning and holding. An arcuate series of stops to cooperate with the handle are provided, and these are shown at 27, as approximately conoidal bosses struck up in the plate 10. The plate is also preferably provided with a struck-up reenforcing ridge 28.

The handle 4 is preferably provided with a longitudinally-disposed, outwardly-projecting and inwardly-concave portion 29, which cooperates with the stops 27 to position the damper 1 and to hold it in position, and also serves` to reenforce the handle. The end of the handle 4 is preferably bent upwardly and then outwardly, as best shown in Fig. 3, for convenience in grasping and manipulating it.

By reason of the spring action of handle 4, it will snap down with its recess 29 upon a stop 27, and with either side of the handle 4 past the stop, and usually pressing against plate 10 (Fig. 5). This effectively locks the handle, until it is again grasped and forcefully -pulled or pushed. Thereupon ity will ride off from a stop 27 (position a in Fig. 2), and will snap down between two of the stops 27 (position b in This provides an intermediate position and holding of the damper in position between each adjacent pair of stops 27 in the series. The handle is readily detachable by rotating it until its projections 22 and 23 are in register with recesses 13 and 14'in the plate 10, and then moving the handle outwardly along the shaft 3.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and Without sacrificing its chief advantages.

lVhat I claim is 1. A damper mechanism including in combination a damper having a shaft, and positioning means therefor including a handle on the shaft and a series of spaced apart lever stops constructed and arranged to position and hold the lever either on or between the stops to correspondingly position the damper.

2. A damper mechanism including in combination a damper having a shaft, and positioning means therefor including a resilient handle on the shaft and a series of spaced apart lever stops, the resilient 1ever being adapted to engage upon and between the stops to position and to hold the damper in position.

3. A damper mechanism including in combinationa damper having a shaft, and positioning means connected to the shaft and including a handle of spring metal having a recess and a series of spaced apart positioning stops, the resilient handle being adapted to engage on the stops and also in the intervening spaces to position the damper and 'hold it in position.

4. A damper positioning device comprising a plate struck up to form a series of spaced apart positioning stops anda sheet metal handle adapted to be fixed tothe damper and struck up to cooperate with and between the stops to position the damper.

5. A damper positioning device comprising a sheet metal plate struck up to form a series of spaced apart positioning stops and a sheet metal handle adapted to be fixed to the damper and provided with a recess to resiliently cooperate withthe stops to position the damper.

6. A damper positioning device comprising a sheet metal plate struck up to form a series of spaced apart positioning stops and a sheet metal handle adapted to be fixed to the damper and punched out to pass on to a damper shaft in specific position relative to the damper, and having a recess adapted to cooperate with said stops.

7. A damper positioning device comprising a sheet metal plate struck up to form a series of spaced apart positioning stops and a sheet metal handle adapted to be fixed to the damper and punched'out to pass on to a damper shaft in specific position relative to the damper and having a recess to cooperate with the stops to position the damper.

8. A damper positioning device including in combination a series of spaced apart stops and a handle fixed to the damper and adapted to automatically engage upon or between the stops to position the damper and hold it in position.

9. A damper positioning device including in combination a series of spaced apart stops and a spring acting handle fixed to the damper and adapted to automatically engage by the spring action upon or between the stops to position the damper and hold it in position. y

10. The combination with a rotatable shaft of an actuating handle and a plurality of locating stops therefor, the handle cooperating resiliently with the stops to locate and hold the handle either at or between the stops.

11. The combination with a rotatable shaft of an actuating handle and a plurality of locating stops therefor, the handle Cooperating' with the stops to locate and hold the handle either at or between the 10 stops.

In testimony whereof, I have signed my name to this specification.

ALBERT BLUMLEIN. 

